CN217891661U - Mould structure for directly feeding plastic part product sprue and automatically cutting off - Google Patents

Abstract

The utility model provides a mold structure for automatically cutting off a sprue of a direct-injection type plastic product, which relates to the technical field of injection molding processing equipment and comprises a mold body for injection molding, wherein the mold body comprises a front template and a rear template, a plastic part is formed on the rear template, and the sprue is formed between the plastic part and an injection molding runner; a cutting mechanism is arranged on the side part of the rear template; the cutting mechanism comprises a guide block arranged on one side of the rear template, a cutter box movably arranged in the guide block, cutters fixed in the cutter box and partially extending out of the cutters and the front end, a driving device connected with the rear end of the cutter box, and an ejector plate arranged in the rear template. The utility model discloses can carry out the automatic excision of runner after injection moulding to the direct piece product runner of moulding that advances the type of gluing, reduce workman's work load, reduce working strength, when reducing the cost of labor and the energy consumption of enterprise, improve production efficiency greatly, realize full automatic production.

Description

Mold structure for automatic gate cut-off of direct plastic parts

technical field

The utility model relates to a mold structure for automatically cutting off the gate of a direct glue-in plastic product, belonging to the technical field of injection molding processing equipment.

Background technique

At present, the gates of direct injection plastic products generally need to be removed manually after injection molding. However, the cross-sectional area of the direct sprue is large, it is difficult to remove the gate, and the traces after the removal of the gate are obvious, the workload of the workers is heavy, the work intensity is high, the labor cost and energy consumption of the enterprise are increased, and the production efficiency is low, which cannot be realized. Fully automatic production.

Aiming at this current situation, a kind of mold for automatic cutting off the gate of the direct glue type plastic product is proposed now.

Utility model content

In order to solve the above-mentioned defects in the prior art, the utility model provides a mold structure for automatic cut-off of the gate of a direct glue-in type plastic product.

In order to achieve the above object, the technical scheme that the utility model takes is as follows:

A mold for automatically cutting off the gate of a direct plastic product product, including a mold body for injection molding. The mold body includes a front template and a rear template. The plastic part is formed on the rear template, and the gate is formed on the plastic part. and the injection runner; the side of the rear template is provided with a cutting mechanism; the cutting mechanism includes a guide block installed on one side of the rear template, a knife box movably installed in the guide block, and a knife box fixed in the knife box And partly stretches out the cutter and the cutter of the front end, and the driving device connected with the rear end of the cutter box.

In order to ensure fast and accurate automatic cutting and automatic reset, the utility model provides an optimal solution. The driving device adopts an air cylinder or an electric cylinder, the piston rod of the air cylinder or electric cylinder is fixed with the tool box, and the air cylinder or electric cylinder passes through a The fixed block is fixed with the back template.

In order to facilitate the installation and positioning of the guide block and the fixed block, the utility model provides a preferred solution. The bottom end of the guide block is provided with a boss 1 for positioning and installation, and the front end of the fixed block is also provided with a boss for positioning and installation. The corresponding position of the boss 2 is provided with a groove 1 cooperating with the said boss 1, and the corresponding position of the guide block is provided with a groove 2 cooperating with the said boss 2.

In order to ensure smooth movement between the tool box and the guide block, the utility model provides a preferred solution, and the guide block is made of beryllium copper.

The utility model can realize the following technical effects:

(1) The utility model can automatically remove the gate of the plastic product gate of the direct glue type after injection molding, reduce the workload of workers, reduce the work intensity, reduce the labor cost and energy consumption of the enterprise, and greatly improve Improve production efficiency and realize fully automatic production.

(2) The gate of the utility model automatically cuts off the mold, and realizes precise control through the cylinder or electric cylinder, so that the gate can be removed quickly and accurately, and the traces after removal are not obvious, which can ensure the final quality of the plastic product.

(3) The utility model puts the cutter into the cutter box, which reduces the overall structural volume, optimizes the installation space, and is convenient for actual installation and production. By controlling the tool box to move in the guide block, when the cutting operation is not performed, the tool is inside the guide block and is not exposed outside, which can avoid the impact of dust, plastic and other garbage on the movement process, reduce the risk of tool damage, and ensure the operation of the tool reliability and stability.

Description of drawings

Figure 1 is the front view of the mold before the gate is cut (when the front and rear templates are not separated);

Fig. 2 is a perspective view before the mold cuts the gate;

Fig. 3 is the top view before the mold cut gate;

Figure 4 is the front view of the mold when the gate is cut (after the front and rear templates are separated);

Figure 5 is a perspective view of the mold when the gate is cut;

Fig. 6 is the top view when mold cut gate;

Fig. 7 is a structural schematic diagram;

Labeling instructions: 1-tool, 2-tool box, 3-cover plate, 4-guide block, 5-fixed block, 6-cylinder, 7-gate, 8-slider one, 9-slider two, 10- Front template, 11-rear template, 12-ejector plate, 13-plastic product, 14-piston rod, 15-nut, 16-boss one, 17-boss two.

Detailed ways

In order to make the technical means of the present utility model and the technical effects that can be achieved more clearly and more perfectly disclosed, the following embodiments are provided hereby, and are described in detail as follows in conjunction with the accompanying drawings:

As shown in Fig. 1 to Fig. 7, a mold structure for automatic cutting of the gate of a direct glue-in plastic product in this embodiment includes a mold body for injection molding. The mold body includes a front template and a rear template. Formed on the rear template, the gate is formed between the plastic part and the injection runner; the side of the rear template is provided with a cutting mechanism; the cutting mechanism includes a guide block installed on one side of the rear template, and a knife that is movably installed in the guide block A box, a tool fixed in the tool box and partially protruding from the tool and the front end, and a driving device connected with the rear end of the tool box.

Preferably in this embodiment, the driving device is an air cylinder or electric cylinder, the piston rod of the air cylinder or electric cylinder is fixed to the tool box, and the air cylinder or electric cylinder is fixed to the rear template through a fixing block. The use of air cylinder or electric cylinder can ensure fast and accurate automatic cut-off and automatic reset.

Preferably in this embodiment, the bottom end of the guide block is provided with boss 1 for positioning and installation, the front end of the fixed block is also provided with boss 2 for positioning and installation, and the corresponding position of the rear template is provided with a groove that cooperates with boss 1 1. The corresponding position of the guide block is provided with a groove 2 cooperating with the boss 2, which facilitates the installation and positioning of the guide block and the fixed block.

Preferably in this embodiment, the guide block is made of beryllium copper, which can ensure smooth movement between the tool box and the guide block.

In this embodiment, the cylinder 6 is fixed on the fixed block 5 by screws, the fixed block 5 is positioned by the boss 2 17, and fixed on the guide block 4 by screws. The guide block 4 is positioned by the boss 2, and is fixed on the rear formwork 11 with screws, and the front formwork 10 is correspondingly evacuated. Cutter 1 is placed in cutter box 2, and box cover plate 3 is screwed on cutter box 2 to compress cutter 1 and nut 15, and piston rod 14 is connected with cutter box 2 by nut 15.

Of course, the mold of this embodiment also includes an unloading mechanism. The unloading mechanism adopts a thimble plate, which is mainly used to facilitate the demoulding of the finished product. It is related to the structure of the mold and has nothing to do with the structure of the cutting gate, and its structure and principle are all existing. There are technologies, so I won't go into details here.

The working principle of this embodiment: after the injection molding of the mold is completed, the front template 10 and the rear template 11 are separated, the mold is opened from the A-A parting surface earlier, the slider one 8 and the slider two 9 are moved outward, and the plastic product 13 is due to its own The structure is left on the rear mold 11. At this time, the cylinder 6 is working, and the 14 piston rod on the cylinder 6 is pushed out for a certain stroke, and the tool box 2 is pushed to slide through the guide block of the tool box 4, and the plastic part of the tool 1 is placed in the tool box 2. Gate 7 of product 13 is cut off. Due to gravity, gate 7 falls. After completing the cutting work, the cylinder 6 works to make the piston rod 14 return to the initial position, and at this time, the pulling tool 1 and the box 2 also return to the initial position. Subsequently, the ejector plate 12 is ejected forward, and the plastic product 13 is pushed out of the template 11, and the plastic product 13 falls due to gravity. Then mold closing, ejector plate 12 returns to initial position. Proceed to the next cycle of injection molding.

The above content is a further detailed description of the technical solutions provided in conjunction with the preferred implementation of the present utility model. It cannot be determined that the specific implementation of the present utility model is only limited to the above-mentioned descriptions. For those of ordinary skill in the technical field to which the utility model belongs, On the premise of not departing from the concept of the utility model, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (2)

1. A direct glue-in type plastic product gate automatic cut-off mold, comprising a mold body for injection molding, said mold body comprising a front template and a rear template, the plastic part is formed on the rear template, and the gate is formed on Between the plastic part and the injection runner; the side of the rear template is provided with a cutting mechanism; it is characterized in that: the cutting mechanism includes a guide block installed on one side of the rear template, and a tool box that is movably installed in the guide block , fixed in the tool box and partially protruding from the tool and the front end of the tool, the driving device connected to the rear end of the tool box, and the thimble plate installed inside the rear template; The piston rod of the cylinder is fixed to the tool box, and the cylinder or electric cylinder is fixed to the rear template through a fixing block; Slider 1 and slider 2 are arranged on the rear template; The cutting mechanism also includes a box cover plate, the piston rod is connected with the knife box through a nut, and the box cover plate is fixed on the knife box with screws to compress the knife and the nut; The bottom end of the guide block is provided with a boss 1 for positioning and installation, the front end of the fixed block is also provided with a boss 2 for positioning and installation, and the corresponding position of the rear template is provided with a groove that cooperates with the boss 1 1. The corresponding position of the guide block is provided with a groove 2 that cooperates with the boss 2. 2. A mold for automatic gate cut-off of direct glue-in plastic products as claimed in claim 1, wherein the guide block is made of beryllium copper.

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